The US military (and many other organizations) express time in a 24-hour format.
Most civilians express time in a 12-hour format.

Normal People's Time		Military Time
1:35 a.m.		01:35
1:35 p.m.		13:35
12:18 a.m.		0:18
1:36 a.m.		01:36 "Oh-one-three-six, Sir!"

Now for the math part:

Referring to the table above, you can see that when a soldier or swabbie adds 1 to 0, the result is 1.
0 + 1 = 1   Duh!

Also from above, when John Q. Public
adds 12 to 1, the result is 1.
adds  1 to 0, the result is also 1.
 0 + 1 = 1
12 + 1 = 1   WTF ?!?!

Wouldn't logic dictate (in the civilian mind)
since 1 + 12 = 1
  and 1 +  0 = 1
 that     12 = 0

And we wonder how we can keep sending those buffoons to Washington, D of C ...

It's fun to make jokes about "Military Intelligence" being a self-canceling expression or contradiction in terms. However, considering something as simple as basic arithmetic, which group has the real intelligence?